Trek Checkpoint ALR 5 Gen 3 - Bronze Age

This trail-ready gravel mountain bike delivers a perfect balance of performance and rugged utility, making it an excellent match for weekend trail exploration, multi-day bikepacking adventures, or a rock-solid daily driver. Equipped with a premium Trek Checkpoint full carbon fork to absorb bumps and trail chatter, this model features an advanced 300 Series Alpha Aluminium frame with integrated frame bag and accessory mounts, a crisp-shifting 12-speed SRAM Apex drivetrain, and a factory-spec Bontrager alloy seatpost for dependable reliability.

Specifications

Frameset & Suspension

• Frame: 300 Series Alpha Aluminium, internal cable routing, 3S chain keeper, T47, UDH (Universal Derailleur Hanger), rack and mudguard mounts, integrated frame bag mounts, flat-mount disc, 142x12 mm chamfered thru-axle.

• Fork: Trek Checkpoint, full carbon, tapered steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru-axle.

Drivetrain & Shifting (SRAM Apex 1x12)

• Shifter: SRAM Apex, 12-speed.

• Front Derailleur: N/A (1x Dedicated single-ring layout).

• Rear Derailleur: SRAM Apex XPLR, 44T max cog.

• Cassette: SRAM XPLR PG-1231, 11-44, 12-speed.

• Chain: SRAM Apex, 12-speed.

• Bottom Bracket: SRAM DUB Wide, T47 threaded, internal bearing.

• Pedals: Platform pedals sold separately.

• Crankset Configurations (SRAM Apex 1, 40T, DUB Wide):

  • Sizes XS, S: 165 mm length.

  • Sizes M, ML: 170 mm length.

  • Sizes L, XL: 172.5 mm length.

• Max Chainring Limits: 1x configuration: Maximum 44T | 2x configuration: Maximum 46/30 | 3x configuration: N/A.

Brakes & Rotors

• Brakes: SRAM Apex D1 hydraulic disc, flat mount system.

• Brake Levers: SRAM Apex, 12-speed.

• Rotors: SRAM Paceline, rounded, CenterLock design ([Front] 160 mm / [Rear] 160 mm).

• Rotor Size Limits: Frame and fork maximum capacity is 180 mm front and rear.

Wheels & Tyres

• Rims: Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23 mm width, Presta valve layout.

• Spokes: 14 g stainless steel, black.

• Front Hub: Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru-axle.

• Front Thru-Axle Skewer: Bontrager Switch chamfered thru-axle.

• Rear Hub: Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru-axle.

• Rear Thru-Axle Skewer: Bontrager Switch chamfered thru-axle, with integrated removable lever.

• Tyres: Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42 mm.

• Included Tubeless Spares: Bontrager TLR sealant (180 ml / 6 oz).

• Max Tyre Clearance: Frame limits at 50 mm without mudguards, or 42 mm with mudguards (as measured, see manual for details).

Cockpit & Components

• Saddle: Verse Short Comp, steel rails, 145 mm width.

• Seatpost: Bontrager alloy, 27.2 mm diameter, 12 mm offset, 330 mm length.

• Handlebar Tape: Bontrager Supertack Perf tape.

• Handlebars standard by Size (Bontrager Elite Gravel, alloy):

  • Sizes XS, S: 40 cm width.

  • Sizes M, ML: 42 cm width.

  • Size L: 44 cm width.

  • Size XL: 46 cm width.

• Stem Geometry by Size (Bontrager Elite, 31.8 mm clamp, 7-degree rise):

  • Size XS: 70 mm length (Blendr compatible).

  • Sizes S, M: 80 mm length (Blendr compatible).

  • Sizes ML, L: 90 mm length (Blendr compatible).

  • Size XL: 100 mm length (Blendr compatible).

Sizing, Weight & Performance Limits

• Alpha Sizes Available: XS, S, M, ML, L, XL

• Total Bike Weight: 9.87 kg / 21.76 lb (Size ML configuration setup with factory TLR sealant, no inner tubes).

• Weight Limit: This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 125 kg (275 lb).

Please Note: We make every effort to ensure the accuracy of the specification information, but components are subject to change by the manufacturer at any time without prior notice due to ongoing factory running parts substitutions.